(4/9 + 2/7) - 2/3

Help Plz i suck at math Imao

Answer 0.069

Step-by-step explanation:

First you do PEMDAS and solve inside of the () and go from left to right 4/9 is 0.444 and 2/7 is 0.285 now you add them and get 0.729 finally you subtract 2/3 0.66 so you do 0.729 - 0.66 and you get 0.069.

idk

step-by-step explanation:

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.